Contactless remote induction of shear waves in soft tissues using a transcranial magnetic stimulation device. (8th March 2016)

• Record Type: Journal Article
• Authors: Grasland-Mongrain, Pol; Miller-Jolicoeur, Erika; Tang, An; Catheline, Stefan; Cloutier, Guy
• Is Part Of: Physics in medicine & biology. Volume 61:Number 6(2016:Mar.)
• Page Start: 2582
• Page End: 2593
• Publication Date: 2016-03-08
• Subjects: shear wave elastography -- Lorentz force -- radiation pressure -- transcranial magnetic stimulation; Biophysics -- Periodicals; Medical physics -- Periodicals; 610.153
• DOI: 10.1088/0031-9155/61/6/2582
• Languages: English
• ISSNs: 0031-9155

Abstract

Abstract: This study presents the first observation of shear waves induced remotely within soft tissues. It was performed through the combination of a transcranial magnetic stimulation device and a permanent magnet. A physical model based on Maxwell and Navier equations was developed. Experiments were performed on a cryogel phantom and a chicken breast sample. Using an ultrafast ultrasound scanner, shear waves of respective amplitudes of 5 and 0.5 μ m were observed. Experimental and numerical results were in good agreement. This study constitutes the framework of an alternative shear wave elastography method.